Home / 343,553,485.80-515,330,228.70-205,803,978.60

Finding the Fourth Proportional to 343,553,485.80, 515,330,228.70 and 205,803,978.60

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Solution

The fourth proportional to 343,553,485.80, 515,330,228.70 and 205,803,978.60 is: 308,705,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,553,485.80 : 515,330,228.70 = 205,803,978.60 : x
  2. Step 2: Convert to fraction form
    343,553,485.80/515,330,228.70 = 205,803,978.60/x
  3. Step 3: Cross multiply
    343,553,485.80x = 515,330,228.70 × 205,803,978.60
  4. Step 4: Simplify right side
    343,553,485.80x = 106,057,011,359,307,904
  5. Step 5: Solve for x
    x = 106,057,011,359,307,904/343,553,485.80
  6. Step 6: Final answer
    x = 308,705,967.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.